Answer:
here you go, hope it's right
60 W = 0.06 kW
Lifetime = 0.06 kW * 190 h = 11.4 kWh
The lifetime of the bulb is 11.4 kWh, or kilowatt-hours
It’s the one you picked D
28% of the marbles are green because there is a total of 25 marbles and 7/25 is 0.28. This translates to 28%.